Observation :

Table 1: Calculated values associated with the reaction between Silver nitrate and copper

Trial #	Mass of Dry Silver      Residue (g)	Theoretical Yield (g)	Percentage Yield (%)
1	1.837 g	0.664 g	277 %
2	1.28 g	0.71 g	180 %
3	1.166 g	0.67 g	174%
4	0.749 g	0.73 g	102 %
5	0.72 g	0.73g	98 %

                  When the amount of actual yield ( mass of dry silver residue ) becomes far high compared to the theoretical yield, the resulting percent yield greater than 100% which is not correct.     

Figure 1: Copper wire and the dried silver residue of Group 5 A.M 

- the color of the copper wire quite faded away and turns into quite reddish from the original color which is quite brownish orange. 

Figure 2: Silver metal forming from the reaction of Silver nitrate and copper wire.